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公开(公告)号：US20130241301A1
公开(公告)日：2013-09-19
申请号：US13789864
申请日：2013-03-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shuhei MAEDA , Koichiro Kamata , Misako Miwa
IPC: H04B5/00
CPC classification number: H04B5/0037 , H04B5/0093
Abstract: There is provided a power transmission device which includes an antenna receiving a reflected power from a power receiving device, a power detection unit detecting a value of the reflected power received by the antenna, a control circuit determining a power adjustment value in accordance with the value of the reflected power, a power adjustment unit to which the reflected power whose value is detected is input and which adjusts impedance in accordance with the power adjustment value determined by the control circuit, and a demodulation circuit to which the reflected power having the power adjustment value determined by the control circuit is input via the power adjustment unit having the adjusted impedance, and relates to a power feeding system including the power transmission device.
Abstract translation: 提供了一种电力传输装置，其包括从电力接收装置接收反射功率的天线，检测由天线接收的反射功率的值的功率检测单元，根据该值确定功率调整值的控制电路 反射功率的功率调节单元，输入检测值的反射功率的功率调节单元，并且根据由控制电路确定的功率调整值调整阻抗;以及解调电路，具有功率调整的反射功率 由控制电路确定的值通过具有调节阻抗的功率调节单元输入，并且涉及包括电力传输装置的馈电系统。
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公开(公告)号：US09998003B2
公开(公告)日：2018-06-12
申请号：US15331029
申请日：2016-10-21
Applicant: Semiconductor Energy Laboratory Co., LTD.
Inventor： Kei Takahashi , Koichiro Kamata , Misako Miwa , Shuhei Maeda
CPC classification number: H02M3/156 , G05F3/08 , H02J5/005 , H02J7/00 , H02J7/025 , H02J50/12 , H02M2001/0022
Abstract: A circuit capable of keeping input impedance constant is provided. Further, a circuit which can contribute to improvement in power feeding efficiency in power feeding by a magnetic resonance method is provided. A voltage (a former voltage) proportional to a direct-current voltage input to a DC-DC converter from the outside and a voltage (a latter voltage) proportional to a current input from the outside are detected, and the ratio of the former voltage and the latter voltage are held constant. Accordingly, input impedance can be kept constant. Further, impedance conversion is performed in the DC-DC converter. Thus, even when the battery in which power feeding is performed exists on an output side of the DC-DC converter, input impedance can be kept constant. Consequently, power can be supplied to a power receiving device including the DC-DC converter and the battery with high power feeding efficiency by a magnetic resonance method.
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公开(公告)号：US09673867B2
公开(公告)日：2017-06-06
申请号：US13789864
申请日：2013-03-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shuhei Maeda , Koichiro Kamata , Misako Miwa
CPC classification number: H04B5/0037 , H04B5/0093
Abstract: There is provided a power transmission device which includes an antenna receiving a reflected power from a power receiving device, a power detection unit detecting a value of the reflected power received by the antenna, a control circuit determining a power adjustment value in accordance with the value of the reflected power, a power adjustment unit to which the reflected power whose value is detected is input and which adjusts impedance in accordance with the power adjustment value determined by the control circuit, and a demodulation circuit to which the reflected power having the power adjustment value determined by the control circuit is input via the power adjustment unit having the adjusted impedance, and relates to a power feeding system including the power transmission device.
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4.发明授权Power reception control device, power reception device, power transmission and reception system, and electronic device 有权电力接收控制装置，受电装置，电力传送接收系统以及电子装置公开(公告)号：US09285848B2
公开(公告)日：2016-03-15
申请号：US13865418
申请日：2013-04-18
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Misako Miwa , Yutaka Shionoiri
CPC classification number: G06F1/26 , G06F1/28 , G06F1/3203 , G06F1/3278 , G06F1/3287 , Y02D10/157 , Y02D10/171
Abstract: Provided is a power reception device in which power consumption at the time of wireless power supply is reduced. A power reception device is provided with a power reception control device capable of temporarily stopping supply of power supply voltage to a communication control unit for controlling communication in a break period of communication intermittently performed between a power transmission device and a power reception device. In the structure, a clock signal is generated on the basis of a power receiving signal transmitted from the power transmission device, and a period of communication intermittently performed can be measured using the clock signal. Further, a structure may be employed in which supply of power supply voltage to the communication unit in the power reception control device can be stopped in the break period of the communication.
Abstract translation: 提供了一种在无线电力供应时的功耗降低的电力接收装置。 电力接收装置设置有能够暂时停止向在电力传输装置和电力接收装置之间间歇地进行的通信的中断期间的通信控制用的通信控制单元供给电源电压的电力接收控制装置。 在该结构中，基于从电力传输装置发送的电力接收信号生成时钟信号，并且可以使用时钟信号来测量间歇地进行的通信周期。 此外，可以采用这样的结构，其中在通信的断开期间能够停止向受电控制装置中的通信单元供电的电源电压。
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公开(公告)号：US20130285464A1
公开(公告)日：2013-10-31
申请号：US13864303
申请日：2013-04-17
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Misako Miwa , Koichiro Kamata , Yutaka Shionoiri , Shuhei Maeda
IPC: H04B5/00
CPC classification number: H04B5/0037 , H04B5/0087
Abstract: To provide a power feeding system and the like with which charging can be performed without a decrease in the power supply efficiency. To provide a power feeding system and the like with which can offer a power feeding service which is efficient to both a power feeding user and a power feeding provider. The power transmission state in each of power transmitting portions is monitored, the power transmitting portion having the highest power transmission efficiency is selected based on positional advantage, and the power transmitting resonance coil included in the selected power transmitting portion is kept at a first resonance frequency, whereby power transmission continues. The resonance frequency of the power transmitting resonance coil included in the non-selected power transmitting portion (the number of the non-selected power transmitting portions may be plural) is set to a second resonance frequency, whereby power transmission is stopped.
Abstract translation: 为了提供能够进行充电而不降低电力供给效率的供电系统等。 为了提供能够提供对供电用户和供电提供者都有效的供电服务的供电系统等。 监视每个电力传输部分中的电力传输状态，基于位置优势选择具有最高功率传输效率的电力传输部分，并且包括在所选择的电力发送部分中的电力发送谐振线圈保持在第一谐振频率 ，从而继续传输电力。 包括在未选择的动力传递部中的动力传递共振线圈（未选择的动力传递部的数量可以是多个）的共振频率被设定为第二共振频率，从而停止动力传递。
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Patent Agency Ranking
公开(公告)号：US09641223B2
公开(公告)日：2017-05-02
申请号：US13804883
申请日：2013-03-14
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Misako Miwa , Koichiro Kamata , Shuhei Maeda
CPC classification number: H04B5/0037 , B60L11/182 , H02J7/025 , H02J50/20 , H02J50/80 , H04B5/0093
Abstract: A power receiving device and a power feeding system which are capable of performing communication and power feeding at the same time are provided. Further, a power receiving device and a power feeding system which are capable of stably performing communication during power feeding are provided. One embodiment of the present invention relates to a power receiving device which includes an antenna for communication and power feeding that receives AC power, a rectifier circuit that rectifies the received AC power including the modulation signal into DC power, a smoothing circuit that smoothes the resulting DC power, a power storage device that stores the smoothed DC power, a communication control unit that analyzes the modulation signal included in the AC power, and a transformer that is positioned between the antenna and the rectifier circuit and changes a reference potential of the AC power, and a power feeding device.
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公开(公告)号：US09477249B2
公开(公告)日：2016-10-25
申请号：US13711961
申请日：2012-12-12
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kei Takahashi , Koichiro Kamata , Misako Miwa , Shuhei Maeda
CPC classification number: H02M3/156 , G05F3/08 , H02J5/005 , H02J7/00 , H02J7/025 , H02J50/12 , H02M2001/0022
Abstract: A circuit capable of keeping input impedance constant is provided. Further, a circuit which can contribute to improvement in power feeding efficiency in power feeding by a magnetic resonance method is provided. A voltage (a former voltage) proportional to a direct-current voltage input to a DC-DC converter from the outside and a voltage (a latter voltage) proportional to a current input from the outside are detected, and the ratio of the former voltage and the latter voltage are held constant. Accordingly, input impedance can be kept constant. Further, impedance conversion is performed in the DC-DC converter. Thus, even when the battery in which power feeding is performed exists on an output side of the DC-DC converter, input impedance can be kept constant. Consequently, power can be supplied to a power receiving device including the DC-DC converter and the battery with high power feeding efficiency by a magnetic resonance method.
Abstract translation: 提供能够保持输入阻抗恒定的电路。 此外，提供了可以通过磁共振方法有助于提高馈电的馈电效率的电路。 检测与从外部输入到DC-DC转换器的直流电压成比例的电压（前一个电压）和与从外部输入的电流成比例的电压（后一个电压），并且前一个电压 并且后一电压保持恒定。 因此，输入阻抗可以保持恒定。 此外，在DC-DC转换器中进行阻抗转换。 因此，即使在DC-DC转换器的输出侧存在进行供电的电池，也可以保持输入阻抗恒定。 因此，可以通过磁共振方式向具有高功率馈送效率的DC-DC转换器和电池的电力接收装置供电。
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公开(公告)号：US09390850B2
公开(公告)日：2016-07-12
申请号：US13934290
申请日：2013-07-03
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Misako Miwa
Abstract: Provided is a power transmitting device, a power feeding system, and a power feeding method in which power loss is cut by increasing power use efficiency and power can be supplied to a power feeding user (a power receiving device) with high power transmission efficiency. Depending on a power feeding state (e.g., resonant frequency of a power transmitting resonance coil is not the same as that of a power receiving resonance coil, or the influence of their positional relation), power transmitted from a power source portion of the power transmitting device is reflected to the power transmitting coil side by the power transmitting resonance coil. Further, a power recovering function (circulation function) for power reflected to the power transmitting device is provided to recover the power reflected to the power transmitting coil side and to reuse it for power transmission.
Abstract translation: 提供一种能够通过提高电力利用效率来切断电力损失的电力传送装置，供电系统以及供电方式，能够向输送效率高的供电用户（电力接收装置）供电。 根据供电状态（例如，发送功率的谐振线圈的谐振频率与受电谐振线圈的谐振频率不同或其位置关系的影响），从发送功率的电源部分发送的功率 设备通过电力传输谐振线圈反射到发射线圈侧。 此外，提供用于向发送功率发送装置反射的功率的功率恢复功能（循环功能），以恢复向发送线圈侧反射的功率，并将其重新用于功率传输。
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公开(公告)号：US20130154385A1
公开(公告)日：2013-06-20
申请号：US13709424
申请日：2012-12-10
Applicant: Semiconductor Energy Laboratory Co., LTD.
Inventor： Misako Miwa , Shuhei Maeda
IPC: H02J17/00
CPC classification number: H02J50/12 , H02J5/005 , H02J7/025 , H02J17/00 , H02J50/80 , H04B5/0037 , H04B5/0093
Abstract: The invented power feeding system includes power transmitting and power receiving devices. The power transmitting device includes an AC power source, a first electromagnetic induction coil, a first resonant coil, and a first capacitor. The power receiving device includes an antenna unit including a second resonant coil, a second capacitor, and a second electromagnetic induction coil; a charging circuit unit including a rectifier circuit, a power storage device, a current detection circuit for detecting a current value supplied to the power storage device, and a voltage detection circuit for detecting a voltage value applied to the power storage device; and a communication control unit including a control circuit for generating a selection signal based on the detected current value and the detected current voltage, a plurality of switches to be turned on or off by the selection signal, and passive elements electrically connected to the plurality of switches.
Abstract translation: 本发明的馈电系统包括电力传输和电力接收装置。 电力传输装置包括AC电源，第一电磁感应线圈，第一谐振线圈和第一电容器。 电力接收装置包括：天线单元，包括第二谐振线圈，第二电容器和第二电磁感应线圈; 充电电路单元，包括整流电路，蓄电装置，用于检测提供给蓄电装置的电流值的电流检测电路，以及用于检测施加到蓄电装置的电压值的电压检测电路; 以及通信控制单元，其包括用于基于检测到的电流值和检测到的电流电压产生选择信号的控制电路，通过选择信号导通或关断的多个开关，以及与多个 开关。
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公开(公告)号：US09941746B2
公开(公告)日：2018-04-10
申请号：US15202607
申请日：2016-07-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Misako Miwa
IPC: H01F27/42 , H01F37/00 , H01F38/00 , H02J50/12 , H01F38/14 , H02J17/00 , H02J50/40 , H02J5/00 , H02J7/02
Abstract: Provided is a power transmitting device, a power feeding system, and a power feeding method in which power loss is cut by increasing power use efficiency and power can be supplied to a power feeding user (a power receiving device) with high power transmission efficiency. Depending on a power feeding state (e.g., resonant frequency of a power transmitting resonance coil is not the same as that of a power receiving resonance coil, or the influence of their positional relation), power transmitted from a power source portion of the power transmitting device is reflected to the power transmitting coil side by the power transmitting resonance coil. Further, a power recovering function (circulation function) for power reflected to the power transmitting device is provided to recover the power reflected to the power transmitting coil side and to reuse it for power transmission.
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